Type-writing machine.



N;H.ANDERSON TYPE WRITING MACHINE.

APPLICATION FILED APILZL I908.

1,155,634. Patented Oct. 5, 1915.

5 SHEE'lS-SHEEI I.

N.' ANDERSON. TYPE WRITING MACHINE. APPLICATION FILED APFLZ], I908.

1,155,634. mm Oct. 1915;

W/TNES N. H. ANDERSON. TYPE WRITING MACHINE.

APPLICATION FILED APR. 27, I908.

1,155,634. Patented Oct; 5, 1915.

5 SHEETS-SHEET 3.

WITNESSES N. H. ANDERSON. TYPE WRITING MACHINE. APPLICATJON FILED APR-27. I908- Y Patented Oct. 5, 1915.

WITNESSES AT oars.

N. H. ANDERSON. TYPE WRITING MACHINE. APPLICATION FILED APR. 27. 1908.

1,155,634. Patented Oct. 5, 1915 5 SHEETS-SHEEI 5.

' warren era as annr cri ic.

NILS H. ANDERSUN, OF HARTFORD. CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN- MEETS, TO THE NOISELESS TYPEWR-ITER COMPANY, OF MIDDLETOWN', CON- NECTICUT, A CORPORATION OF CONNECTICUT.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Cct.5,1915.

Application 11166 Apri127, 1908. Serial No. 429,407.

To all whom it may concern:

Be it known that T, NILs H. ANDERSON,

.acitizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Type-- Writing Machines, of which the following is a full, clear, and exact description, such riers are provided with two or more types,

and wherein the platen is normally held in position to receive imprints from one or more sets of type, the type carrier and the platen being relatively shiftable to enable the platen to receive imprints from the other set or sets of type.

One of the objects of the present invention is to provide means for guiding the shiftablepart which will be of simple construction, and which will perform its functions without producing noise.

Another object is to provide guiding mechanism for shiftable platen carriages of typewriting machines such that the opposite ends of the platen will be moved through equal distances when shifted and the face of the platen will always be maintained in parallelism with the faces of the types and also in'the same line at the different printing points. 1

Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter setforth, and the scope of the application of which will be indicated in the fol? lowing claims.

In the accompanying drawings, wherein are illustrated several of the various possible embodiments of my invention, Figure 1 is a view in side elevation of my improved mechanism. Fig. 2 is a rear view thereof looking. Fig. 3 1s a planthe manner in which it is mounted upon the shifting and guiding mechanism, and also showing the position of the parts when the carriage occupies diiferentshifted positions. Figs. 6, 7 and 8 are diagrammatic views illustrating the positions occupied by the centers'ofthe shift rail and the shifting levers when the carriage occupies its normal, as well as its shifted positions, with respect to the types. Fig. 9 is a view taken substantially online 99 of Fig. 1 looking in the direction ofthe arrow, certain parts being shown in section. Fig. 10 is a View upon an enlarged scale showing the adjusting devices for the lower ball rail of the platen carriage. Figs. 11 and 12 show a different embodiment of the mechanism for guiding the shift rail, the parts being shown in two positions. Figs. 13 and 1% show another embodiment of the mechanism for guiding adapted to support a set of printing memj bers which, in the present instance, are constituted by straight thrust type bars, one of which isshown at 3. The type bars are provided with a plurality of printing characters or types,in the present instance three in number, and are projected forwardly upon the supporting bed against the platen by means of actuating mechanism not herein shown.

4- represents the platen carriage which is constituted by side members 5 and 6 respectively, connected by longitudinally extending members 7. The platen carriage i is provided with the usual paper roll 8, in front of which and connected to the side walls of the carriage is provided a platen 9, which in the present instance is a thin strip of metal having a vertically disposed face for receiving the types and a reancurved face which lies in contact with thepaper roll. The rear portion of the paper carriage slides vertically and longitudinally with respect to an abutment 10, which is I formed, in the present instance, by an upstanding portion or horn of a tie-rod 11, which extends transversely of the machine beneath the bed, and is anchored in the front wall of the machine at 12.

The platen carriage 4 is provided with two rails13'and 14 respectively, which are spaced apart as shown, and which extend between the side pieces 5 and 6 of the platen carriage. These rails are provided with op-- positely disposed grooves 15 and 16 for re- 'ceiving sets of balls 17 v and 18, which travel 'vided for holding the adjustable rail in 25 rails 13 and 14 of the in correspondingly shaped grooves 19 and 20 provided in a vertically shiftable supportin rail 21 interposed between railsl3 and 1 of the platen carriage. In-the present instance, the upper rail 13 of the platen carriage is permanently fixed thereto, while the lower rail 14 may be adjusted toward or from the fixed rail, by means of adjusting screws 22 as clearly shown in Fig. 10 of the the platen carriage travels during letter spacing so that no lost motion will exist therein, and so that any lost motion which might occur from time to time, due to wear, may be effectively taken up. I

Two'balls, 1n the present instance, are pro- ;vided in each pair of opposinggrooves of the upper and lower rails of the platen carriage, and those of the shiftable rail, and

in .order to prevent the balls from moving beyond their proper running distance, centrally located stop pins 24, are provided, and

holders 25, are provided at the ends of the rail, said holders, in the present instance,

comprising sheet metal devices let into rail 21 and bent over into the groove thereof, as

- shown at the'right hand side of Fig. 9, and

the right hand side of Fig; 3. For the centrally located stop pins 24, holders similar to those shown 25 may be provided, such construction being, in some respects, preferable, for the reason that they can not be readily jarred out of operative position.

Depending from either end of the shift rail 21, upon which the platen carriage travels, are shift links 26 and 27 respectiv'ely, said links being pivotally connected to the ends of the rail by means of trunnion screws 28 and 30 threaded into the ends of the rail, as clearly shown in Figs. 3 and 9 of the drawings. The opposite ends of links 26 and 27 are connected respectively to arms 31 and 32. which extend from a rock shaft 33 suitably journaled in the lower portion of the frame of the machine, and which is rocked in opposite directions by shift It will be understood that an oscillation of.

rock shaft 33 in either direction will, through the links 26 and 27, effect a shifting movement of the platen carriage in oppositedireetions from its normal central position, so that the platen will be moved to such positions as will enable it to receive im prints from either the upper or lower set be employed of types, and that.th counterbalancing spring 35 will be of such tension as will tend to m'aintai'nzthe platen carriage in 1ts' normal central (position. v

Inthis'embo iment of my invention the faces of the types shown at 36, 37 and 38 in Fig. 1 of the'drawings, are shown asdisposed in a common vertical plane, the platen d 9 being shown with its operative face in a plane which lies parallel with the. plane occupied' by the type faces, and in order that the platen may travel in-a substantially vertical line when moved to its shiftedpositions and be maintained always in a plane parallel to the faces of the type, I have provided improved guiding-mechanism for the shiftable platen frame, which. I shall now proceed to describe.

Pivotally. connected to the ends of the rail 21 and, in the present instance, swiveled upon trunnion screws 28 and 30, are arms 40 and 41 respectively, each of which slides in a pivotally mounted trunnion. These trunnions, which are shown at 42 and 43 respectively, are carried by lugs or upstanding portions 44, which project from a fixed portion of the frame of the machine, in the present instance, said lugs being formed upon laterally extending portions 45 of the center tie-rod. The opposite ends ofarms 40 and 41 are pivotally connected at 46 and 47 with forwardly extending oscillating arms 48 and 50 respectively, which are fixed upon and extend forwardly from a balancing rock shaft This rock shaft is journaled near either end in the upstanding portions 44 of the center tie.

Having thus described the construction of this embodiment of my invention, the operation thereof may now be understood. When the rail 21 is shifted either up or down by means of links 26 and 27, which are connected to rock shaft 33, arms 48 and 50 mounted upon rock shaft 51 through their connection with arms 40 and 41 respectively, are swung in the arc of a circle, the radius of which bears such relation to the swinging radius of those portions of arms 40 and 41 between the trunnions and the shiftable rail,

which latter radius is constantly varied by the trunnion in which the rail carrying arms' shifted positions.

Le nn of the fact that said latter arms may slide in either direction in their trunnions, that the center 52 of said rail will lie in the same vertical plane when in any of the In other words, the are which the oscillating arms'48 and 50 describe, and that described by arms 40 and 41, are so changed relative to each other that the shiftable rail will move in an almost mathematically straight line or a vertical plane whenever said rail is lifted or depressed. The' curve. through which the platen travels from one printing point'to the other is so slight as to be neglible. The man ner inwhich the movement of the platen in parallelism with the faces of the type is effected, is illustrated diagrammatically in Figs. 6, 7 and 8, wherein the line XY,

which varies but a few tenth0usandths of an inch from a straight line, is indicative of the plane in which the shiftable rail moves, the points C, U and L showing the central,

upper and lower positions of the shiftable rail, B the center ofthe rockshaft 51, T

slide, and A the arc described by the ends of the arms 48 and-5O respectively. Itis, therefore, seen that the carriage while pivoted to the frame of the machine, is provided with compensating means whereby the three printing points occupied by the platen in its' shifted positions, are in the same straight line. i

In the embodiment of the platen carriageguiding means shown in Figs ll and 12, the shiftable rail upon which the carriage is mounted and upon which the same slides for letter spacing, is shown at 53, and as in the embodiment above described, is connected ,to the shift mechanism by means of links,

one of which is shown at 27. Arms 5 are pivotally connected to either end of rail 53,

said arms being supported and sliding at their opposite ends in trunnions 55 jour- 'naled in the frame of the machine. To arms 54 are connected arms 56, which are fastened to a balancing shaft 57, which is supported in the frame of the machine. When rail 53 is shifted either up or down, the arms 56 cause the arms 5i to slide in trunnions 55, whereby said rail moves in the substantially straight line G-H.

In the embodiment of the invention shown in Figs. 13 and 14, the carriage rail 58 is connected to shifting mechanism by the links 60, said rail being pivotally connected to arms 61 supported and sliding on stubs 62. Arms 61 are connected by pivots 63 to arm 64 fastened to a balancing shaft 65 supported in the frame of the machine. In Fig. 13 the parts are shown in central position, and in Fig. 14 they are shown in an upper position, the rail having moved in a vertical direction along a line I73, and being controlled in such movements by arms 64, while arms 61 slide, backward and forward on studs 62.

In Fig. 15 the parallel movement de scribed in the first of the above embodiments of my invention is shown applied to a plain or round rail which supports the carnage. In this modification, one of the links connecting the carriage with the shift is shown at 66, said links being pivotally connected with the trunnioned arms 67 which are connected to the oscillating arms of the balancing shaft.

In the embodiment of my invention shown in Fig. 16, the parallel movement of the structure is similar to that shown in Fig. 15, and the parts are similarly numbered. The links for connecting the stem with the shift are shown at 66 connected to the pivot 68. The outer ends of arms 67 are made circularin contour, as shown at 70, and serve as trunnions at two points for the rail 71, upon which the platen carriage travels through the interposition of trucks 72, which run upon rail 71, a take-up roller 73 being provided which engages the lower part of the shift rail. This device moves the platen carriage verticallysubstantially parallel with the faces of the types in a manner similar to that shown in the diagrams illustrated in Figs. 6, 7 and 8, so that the three printing points are in the same straight line.

It will accordingly be seen that I have provided mechanism which is well adapted to attain, among others, all the ends and objects above enumerated in an extremely simple, yet etiicient manner. The guiding mechanism for the platen carriage, in each of the embodiments of the invention above de scribed, operates not only to maintain the platen in absolute parallelism with the plane occupied by the faces of the types at the printing points,vbut also insures that both ends of the platen carriage will move equal distances when the same is shifted either upward or downward from its normal central position. The adjustment given the lower rails of the platen carriage insures that no lost motion shall exist between the same and the shiftable rail, thus eliminating any chance of noise occurring from the operation of these parts during the shifting or letter spacing movements of the carriage. A further advantage accruing by reason of the present construction resides in the fact that all impacting parts are eliminated, rendering the entire shifting operation capable of being effected substantially without noise.

While I have shown my invention as applied to typewriting machines of the above type, it will be obvious that the same is readily adaptable to machines of other types. As many changes could be made in the above construction and many apparently 'tion could be made without departing, from shown in theaccom anying' drawings shall be interpreted as il ustrative andnot inaalimiting sense.

, --Having described. my'invention what I. claim as new and desire to secure by Letters p nation with thetype bars, each of which 15 provided with a-plurality of types, and'a i platen carriage shiftable in a direction Patent, is

I 1. In atypewriting machine, in combinag tion, a shiftable part, shifting mechanism "therefor, a relatively fixed part, and pivotally mounted connecting means between said .shiftable part and fixed part to compel'a v movement of the shiftedpart to three different printing positions lying in the same plane. p h I I p 2. In a. typewriting machine, in combination, a'set of type-bars each being provided with a plurality vof type, and a platen," one of which isshiftable to'change the relative position of the type and platen for printing different case characters, means forsupporting and shifting the shiftable part, and means pivotally connected with the shift- 7 able part for compelling a movementthereof to shifted positions equally distant'from the other part. v y I In a typewriting machine, the combi nation. with the type bars, each of which 7 carries a plurality of types, and a platen, of

means for compelling the platen to move in a substantially vertical plane when shifted, comprising a shift rail, a rock'shaft, intermediate connecting links, and swingingarms connected with the. rail and with th frame of the machine.

4. In a :"ypewriting machine, the combination with the type bars, each of which is provided with a plurality of types, and a platen shiftable in a direction transverse to its length, of a rock shaft journaled in a fixed portion of the machine, and meansconnected with said rock shaft and with said platen for compelling a..movement of the latter to a shifted position in the same plane parallel to the plane occupied by the faces of the typesw'hen the latter are projected to the printing point.

In a typewriting machine, the combination with the type bars each of which carriesa plurality of types, and a platen carriage shiftable with respect to said types,

of swinging means connected with the platen carriage and adapted to guide the same in its shifting movements, and means forvary .ing the radius of said swinging means whereby the platen carriage will be moved I in a substantially straight line.

6.111 a typewriting machine, the combination with the type bars, each of which is provided'with a plurality of types, and a platen carriage shiftable in a direction transverse to its length for different-case printing, of a plurality of swinging memwill be moved in a substantially straight line. r

bers pivotally connected with the platen care riageand adapted 0 guide the same in 1ts shifting movements, and means for chang- -ing the swinging radius of said members whereby the platen carriage may move 1n a direction substantially parallel to the faces "of the types.

7. In a- -typewriting machine, the Combi I transverse to. its length, of a shiftable rail 'upon which the platen carriage is mounted 8. In atypewriting machine, the combination with the type bars, each of which. carries a plurality of types, a vertically movable platen frame carrying a platen, of means for effecting a vertical movement of the platen frame in, a plane, parallel to the-faces of-the types-when projected to the printing point, comprising a pair of swinging members connected with the v platen 7 frame, pivotal supports. for said swinging members inwhich they are adapted to slide, and means connected with said swinging.

members 'for'changing the swinging radius thereof whereby the platen frame will be 'compelled to move 'in a substantially verti- 1 cal plane. 9. In a typewriting machine, the combination with the type bars, each'of which is provided withaplurality of types, and a '110 'shiftable platen carriage, of means for effecting a movement of the platen carriage in a plane parallel to the faces of the'types whenprojected to impression, comprisin a pair of swinging members connected with 1 5 the platen carriage, trunnions in which said swinging members are adapted to slide, and means connected with said swinging members for causing the latter to slide in their trunnions when the platen carriage is shifted, whereby the swinging radius of said members will be so varied that the platen carriage 'will be compelled to move in a plane substantially parallel to the'faces of the type.

10. In a'rtypewriting machine, the combination with the type bars, eachofwhich is provided with a" plurality of types, and a shiftable platen carriage, of means for compelllng a movement of the platen carriage 13 which the platen carriage is mountedv and tively slidable, a rock shaft, and a connection ports whereby the swinging radius thereof will be so varied that the platen carriage will move in a vertical plane.

11. In a typewriting machine, the combination with the type bars, each of which is provided with a plurality of types-and a platen carriage, of a shiftable rail upon upon which it is adapted to ride for letter spacing, and means pivotally connected with said railwhich is adapted to compel a movement thereofalong a substantially straight line when the same is shifted to change the disposition of the platen with respect to the types.

12. In a typewriting machine, the combination with the type bars, each of which car-- ries two or more types, and a vertically movable platen frame carrying a platen, a vertically movable rail upon which the platen frame is mounted and upon which it rides during its letter spacing movements, of means for eifecting a vertical movement of the platen frame whereby the platen will be carried in a plane parallel to "the faces of the types when they are projected to impression, comprising a pair of swinging'mem bers'one of which is connected to said rail at -each end thereof, a pivotal support for each of said members with which it is relainterposed between each of said. members and said rook shaft adapted when said rail is moved to change the swinging radius of said members, whereby said rail will be compelled to move in such plane as will move the platen in a plane substantially parallel to that occupied by the faces of the typeswhen they are projected to impression. 13. In a typewriting machine, the combination with the type bars, each of which carries two orinore types, and a platen carriage, of a shiftable rail upon which the platen rail is mounted and upon whlch the same rides for letter spacing, a pair of swinging members one of which is connected with said rail at either end thereof, a trun nion for each of said members in which it is adapted to slide, and means for causing said members toslide in said trunnions when said rail is moved, whereby the swinging radius of said members will be so varied that the rail will be moved in a substantially straight line.

14. In a typewriting. machine, the combination with the type bars, each of which is provided with a plurality of types, and a platen carriage, a shiftable rail upon which said carriage is mounted and upon which the same rides for letter'spacing, a rock shaft independent of the shifting means .journaled 1n afixed portion of the machine, and an intermediate operative connection between said rock shaft and said rail whereby the same is moved in a plane substantially parallel to the plane occupied by the faces of the types when they are projected to the printing point.

15. In a typewriting machine, the combination with the type bars, each-of which is provided with two or more types, and a platen frame carrying the platen, of a vertically movable rail upon which the said platen frame is mounted and upon which it slides for letter spacing, a rock shaft journaled in a fixed portion of the framing of the machine, and intermediate operative connections extending from either end of said rail and said rock shaft adapted to compel a movement of the former in a vertical direction when the same is shifted to different printing positions in the same vertical plane.

16. In a typewriting machine, the combination with the type bars, each of which carries two or more types, and a 'shiftable platen carriage, of a vertically shiftable rail upon which the platen carriage is supported and upon which the same travels for letter spacing, a. swinging member connected with each end of said rail, a trunnioned support for each of said swinging member and in which said. member is slidable, a rock shaft supported in a fixed portion of the framing of the machine, and intermediate operative connections between said rock shaft and said swinging member for changing the swinging radius of the latter when said rail is moved to shift the platen, whereby said rail will be compelled to move in a substantially straight line. I

17. In a typewriting machine, the combination with the type bars, each of which carries a plurality of types, and a'platen carriage adapted to be held in such position that the platen will be adapted to receive impressions from the middle set of types, a shiftable rail upon which the platen carriage is mounted and upon which it rises for letter spacing, of a swinging support for said rail, and means for changing the swinging radius of said swinging support whereby said rail will be, moi-ed in a substantially straightline and the platen moved in a direction substantially parallel to the plane occupied by the faces of the types when they are projected to the printing point.

18. In a typewriting machine, the combination with the type bars, each of which carries three types, and a platen earriage adapted normally to be supported in such a pressions from the middle types of the type bars, of a vertically shiftable railupon which the platen carriage is mounted and upon which it rides for letter spacing, a swinging support for said rail, a rock shaft with which said swinging support is connected, portions of said swinging support being relatively movable whereby the swinging radius thereof may be so varied that said rail will be caused to move along a substantially straight line when shifted and the plate will be moved in a plane substantially parallel to that assumed by the faces of the types when they are projected tothe printing point.

19. In a typewriting machine, the combination with the type bars, each of which carries a plurality of types, and a vertically shiftable platen frame adapted to be supported in such position that the platen may receive impressions with the middle types of the type bars, of a vertically shiftable rail upon which the platen carriage is mounted and upon which it rides for letter spacing, means for compelling a, movement of the platen carriage in a substantially vertical plane when said rail is shifted, comprising a pair of arms, one of which is connected to each end of said rail, a trunnioned support for each of said arms with which it has a sliding engagement, a rock shaft journaled in a fixed portion of the framing of the machine, and a pair of arms extending from said rock shaft, each of which is connected with one of said first mentioned arms.

20. In a typewriting machine, the combination with the type bars, which carry three sets of types, of a platen carriage adapted to be supported normally in such position that the platen will receive members from the middle set of types, a rail upon which the platen carriage is-supported and upon which the same rides during its letter spacing movement, means for moving said rail upward and downward from a normal central position, and swinging arms connected with each end of said rail for compelling an equal movement of either end thereof when the same is moved upward or downward from its normal central position, said arms also operating to compel a movement thereof in a substantially straight line.

21. In a typewriting machine, the combination with the type bars which carry three sets of type, of a vertically shiftable platen carriage adapted to be supported in such positionthat the platen will receive impressions from the middle set of types, a ver .tically shiftable rail upon which the platen carriage is mounted and upon which the same slides for letter spacing, means connected with the opposite ends of said rail for shifting the same upward and downward from a normal central position, a rock shaft, and intermediate operative connections between said rail and said rock shaft for compelling an equal movement of the opposite ends of said rail when the same is shifted and a movement thereof ina plane substantially parallel to that occupied by the faces of the types when they are protypes, a vertically shiftable rail upon which the platen carriage is supported and upon which it slides for letter spacing, a link depending from each end of said rail and pivotally connected therewith,'the opposite ends ofsaid links being connected'with the shifting mechanism, and means for compelling an equal movement of the opposite ends of said rail when said links are actuated to move said rail upward or downward from its normal central position, comprising a rock shaft journaled in a fixed portion of the framing of the machine, a pair of arms one of which is extended from either end of said rock shaft, an arm pivotally connected with each of said first mentioned arms and similarly connected with said rail.

at each end thereof, and a pivotal support for each of said latter arms in' which it is adapted to slide.

23. In a typewriting machine, the combination with the type bars, each of which carries a plurality of types, and a shiftable platen carriage, of a shiftable rail upon which said platen-carriage is mounted and upon which it rides for letter spacing, and means for compelling equal movements of the opposite ends of said rail comprising a rock shaft journaled in a fixed portion of the framing of the machine, and a pair of pivotally connected arms interposed between said rock shaft and said rail at the opposite ends of those parts, one arm of each of said pairs being fixed upon said rock shaft and one end of the other arm of each of said pairs having a pivotal connection with said rail.

24. In a typewriting machine, in combination, a part adapted to be shifted for printing difi'erent case characters, a swinging arm connected therewith at one end and pivotallv supported at its opposite end,

means for guiding the said part during its shifting movement comprising a swinging arm connected therewith, and means associated with said arm for changing the swinging radius of said arm whereby the shifted part lies in the same plane in all of its shifted positions.

26. In a typewriting machine, in combination, a part adapted to be shifted, means for guiding the said part during its shifting movement comprising swinging arms at either end of said part connected to permit a change in the swinging radius of one of each of said part of arms.

27. In a typewriting machine, in combination, a part adapted to be shifted, a

swinging member connected therewith, means adapted to actuate said swinging member as said part is shifted and means to move the pivot of said member during the movement of said shiftable part.

28. In a typewriting machine, the combination with a relatively fixed part, of a shiftable part having means pivotally connected therewith, said connection comprising compensating means whereby said shiftable part may move in a substantially straight In testimony whereof I aflix my signature, in the presence of two witnesses.

NILS H. ANDERSON.

.Vitnesses WILLIAM A. LORENZ, Hans IiLiLLNnR. 

